The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 1982
Filed:
Mar. 21, 1980
Applicant:
Inventor:
Warren C Fry, Connellsville, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361111 ; 361100 ; 104288 ; 318135 ; 363135 ;
Abstract
A transient voltage suppression apparatus is disclosed for application in conjunction with a power supply line to protect the chopper thyristor in the transit vehicle propulsion motor control apparatus, wherein an electrolytic capacitor is provided to absorb the inductive stored energy of that power supply line in the zener mode of operation of that capacitor upon the occurrence of a system fault condition involving that power supply line.